We proudly announce the official release of the P-Y4E10-0R DNA air filter for the YAMAHA YZ 450 F 2010-2011.·This New filter features DNA’S advanced FCD (full Contour Design), this innovative design by DNA allows the filtering material to follow precisely the contour of the air box and uses the complete air box surface as “active filtering area“ eliminating “dead spots” that cause turbulence, increasing air flow and filtering efficiency.·Installation of the filter is very easy; simply follow the installation info that DNA provides with the filter.·The filtering efficiency is extremely high at 98-99% filtering efficiency, with 4 layers of DNA Cotton.(Filtering efficiency is the amount of “dirt” the filter can maintain (stop) and protect the engine efficiently. For example the DNA Filter for every 100 grams of dirt that it will receive, it will hold 98-99 grams, this applies even to fine dirt as small as 5 microns.)·The flow of the filter is also extremely high, 170,00 CFM (Cubic feet per minute) @ 1,5” H2O, +53,20 % more than the stock Yamaha foam filter that flows 111,00 CFM @ 1,5” H2O. ·This DNA filter is designed as a High flow filter for Off-Road and road use.